I try to recover from linux software raid failure. I am in a process of recreating the superblocks based on a syslog from the system when it was healthy. The log speaks about 2 md devices, each based on 5 500GB partitions. The RAID-5 /dev/md5 is composed from /dev/sd[b-f]6 and RAID-6 /dev/md6 is composed from /dev/sd[b-f]5. The relevant part dmesg log looks like this: